A bull, escaping from a lion, hid in a cave which some shepherdshad recently occupied. As soon as he entered, a he-goat left inthe cave sharply attacked him with his horns. The bull quietlyaddressed him: "Butt1 away as much as you will. I have no fear ofyou, but of the lion. let that monster go away and I will soonlet you know what is the respective strength of a goat and abull." 
It shows an evil disposition2 to take advantage of a friend in distress3. 